6-Substituted amidino-9-substituted benzyl purine derivatives of the formula
where each of R,, R2 and R3 independently of the others, is a hydrogen atom or a C1-6 alkyl radical and each of R4 and Rs, which are the same or different, is a halogen atom, are novel. The compounds are active anticoccidial agents and may be administered to poultry, usually in suitable compositions, for the prevention of coccidiosis. The compounds may be made by a number of methods.
6-取代脒基-9-取代苄基
嘌呤衍
生物为新型化合物,其式中R、R2和R3各自独立地为氢原子或C1-6烷基,R4和Rs(相同或不同)各自为卤素原子。 这些化合物为活性抗球虫剂,可用于家禽,通常以适当的组合物给药,以预防球虫病。 这些化合物可通过多种方法制成。